Boondocking

https://duckduckgo.com/?q=boondocking+public+lands+utah&t=newext&atb=v369-1&ia=web

https://www.boondockersbible.com/utah/

Arches

https://resetyourjourney.com/9-best-free-dispersed-rv-camping-spots-in-utah-boondocking/

https://resetyourjourney.com//free-dispersed-camping-outside-arches-national-park-blm-144/

Bryce Canyon

https://www.boondockersbible.com/learn/dispersed-camping-near-bryce-canyon-national-park/

Capital Reef

https://resetyourjourney.com/9-best-free-dispersed-rv-camping-spots-in-utah-boondocking/

https://resetyourjourney.com//boondocking-sulfur-creek-rd-near-capital-reef-off-rt-24/

Grand Staircase

https://www.boondockersbible.com/campsite/blm-road-717-grand-staircase-escalante-utah/

Miner's Canyon

No trees. Wide open Jackrabbit trail for bikes. Saratoga Springs.

https://www.youtube.com/watch?v=IhUtB68Ks9E

https://www.google.com/maps/place/Miners+Canyon/@40.2010622,-111.8935675,3842m/data=!3m2!1e3!4b1!4m6!3m5!1s0x874d767283c2cb6b:0xe0ccdb6a7bf991e9!8m2!3d40.2010632!4d-111.8832678!16s%2Fg%2F1thzv8cm?entry=ttu&g_ep=EgoyMDI0MDkyMi4wIKXMDSoASAFQAw%3D%3D

Free dump at Maverik and water.

Mt Carmel

Zion's - Bryce

https://resetyourjourney.com/9-best-free-dispersed-rv-camping-spots-in-utah-boondocking/

https://resetyourjourney.com//dispersed-camping-off-ut-89-mount-carmel-near-kanab/

North Creek

https://www.boondockersbible.com/guides/north-creek-dispersed-camping-map-virgin-ut/

Rest areas

Rest areas are open 24 hours a day, 7 days a week, and thus are available for use overnight.

Rest areas are intended to combat driver fatigue, and thus resting and sleeping is permitted as long as it is being done for the purpose of combating driving fatigue.

There are no limits on how long one can stay at a rest area, only that “extended stays are permitted”, however on-site staff and highway patrol will be monitoring you.

No overnight camping is permitted, which we interpret to mean that rest areas are not intended for recreational use, thus grilling food, setting up outdoor patio furniture, rolling out slides on your RV, watching television outdoors, are not permitted.

Vernal

https://resetyourjourney.com/9-best-free-dispersed-rv-camping-spots-in-utah-boondocking/

https://resetyourjourney.com//boondocking-off-mccoy-flats-rd-vernal-ut/

Zion

https://www.boondockersbible.com/learn/dispersed-camping-near-zion-national-park/

Hurricane Cliffs

https://www.boondockersbible.com/guides/hurricane-cliffs-camping-map-hurricane-ut/